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This patch implements merging of IMMEDIATE ASSIGN REJECT messages as
suggested in GSM 08.58, 5.7. When a new IMM.ASS.REJ is to be appended
to the AGCH queue and the last message in that queue is of the same
type, the individual entries (up to 4 per message) of both messages
are extracted, combined and stored back. If there are less than 5
entries, all entries fit into the old message and the new one is
discarded. Otherwise, the old message will contain 4 entries and the
remaining ones are stored into the new one which is then appended to
the queue.
Ticket: SYS#224
Sponsored-by: On-Waves ehf
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Currently, the AGCH queue length is not limited. This can lead to
large delays and network malfunction if there are many IMM.ASS.REJ
messages.
This patch adds two features:
- Don't accept msgs from the RSL layer when the queue is way too
full (safety measure, mainly if bts_ccch_copy_msg() is not being
called by the L1 layer, currently hard coded to 1000 messages)
- Selectively drop IMM.ASS.REJ from the queue output depending on the
queue length
Ticket: SYS#224
Sponsored-by: On-Waves ehf
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This patch extends paging_gen_msg() by adding an output parameter
is_empty that is true, if only a paging message with dummy entries
has been placed into buffer. This feature is then used by
bts_ccch_copy_msg() to insert an AGCH message if is_empty is true.
Ticket: SYS#224
Sponsored-by: On-Waves ehf
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The first test checks the AGCH may queue length computation.
The second test fills the queue by calling bts_agch_enqueue() with a
mix of IMM.ASS and IMM.ASS.REJ. Then it drains the queue by calling
bts_ccch_copy_msg(). After each of both steps, statistics are printed
out.
Sponsored-by: On-Waves ehf
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